In the opera Aida what is libretto?

Answer 1

A libretto for any Opera, including Aida, is the creation of the words to sbe sung. If it is sung AND spoken, it is generally considered a musical or an operetta. The voices sing what the composer wrote in terms of music, but the poetry or words that tell the story are based on the librettist's work. In the case of Aida, A. Ghislanzoni was the librettist and the libretto was written in Italian. Someone else has translated the words into English - that person may or may not consider themselves a librettist - they may be a foreign language translater.